./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d61576bd95995863195e6d31603d7d0e0f99690d42c4edb47100435eb123db7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:16:08,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:16:08,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:16:08,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:16:08,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:16:08,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:16:08,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:16:08,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:16:08,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:16:08,789 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:16:08,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:16:08,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:16:08,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:16:08,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:16:08,789 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:16:08,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:16:08,791 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:16:08,791 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:16:08,792 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:16:08,793 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:16:08,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:16:08,793 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:16:08,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:16:08,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:16:08,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:16:08,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:16:08,793 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:16:08,794 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61576bd95995863195e6d31603d7d0e0f99690d42c4edb47100435eb123db7 [2025-02-06 02:16:09,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:16:09,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:16:09,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:16:09,038 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:16:09,038 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:16:09,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i [2025-02-06 02:16:10,248 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5802dec2/c71ae3fdc2334ff9b27827ee78aea1f1/FLAGb7dc05f9a [2025-02-06 02:16:10,534 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:16:10,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i [2025-02-06 02:16:10,550 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5802dec2/c71ae3fdc2334ff9b27827ee78aea1f1/FLAGb7dc05f9a [2025-02-06 02:16:10,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5802dec2/c71ae3fdc2334ff9b27827ee78aea1f1 [2025-02-06 02:16:10,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:16:10,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:16:10,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:16:10,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:16:10,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:16:10,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:10,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f820c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10, skipping insertion in model container [2025-02-06 02:16:10,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:10,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:16:10,720 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i[916,929] [2025-02-06 02:16:10,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:16:10,833 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:16:10,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-31.i[916,929] [2025-02-06 02:16:10,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:16:10,915 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:16:10,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10 WrapperNode [2025-02-06 02:16:10,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:16:10,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:16:10,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:16:10,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:16:10,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:10,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:10,988 INFO L138 Inliner]: procedures = 26, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 450 [2025-02-06 02:16:10,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:16:10,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:16:10,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:16:10,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:16:10,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:10,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,051 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 02:16:11,052 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,072 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,097 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:16:11,111 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:16:11,112 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:16:11,112 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:16:11,112 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (1/1) ... [2025-02-06 02:16:11,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:16:11,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:11,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 02:16:11,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 02:16:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:16:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:16:11,162 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:16:11,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:16:11,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:16:11,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:16:11,255 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:16:11,257 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:16:11,839 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L373: havoc property_#t~ite43#1;havoc property_#t~bitwise42#1;havoc property_#t~short44#1;havoc property_#t~bitwise45#1;havoc property_#t~short46#1;havoc property_#t~bitwise47#1;havoc property_#t~short48#1; [2025-02-06 02:16:11,910 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2025-02-06 02:16:11,910 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:16:11,935 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:16:11,937 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:16:11,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:16:11 BoogieIcfgContainer [2025-02-06 02:16:11,938 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:16:11,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:16:11,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:16:11,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:16:11,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:16:10" (1/3) ... [2025-02-06 02:16:11,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa61503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:16:11, skipping insertion in model container [2025-02-06 02:16:11,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:16:10" (2/3) ... [2025-02-06 02:16:11,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa61503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:16:11, skipping insertion in model container [2025-02-06 02:16:11,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:16:11" (3/3) ... [2025-02-06 02:16:11,947 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-31.i [2025-02-06 02:16:11,958 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:16:11,961 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-31.i that has 2 procedures, 196 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:16:12,007 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:16:12,015 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@beebb8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:16:12,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:16:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 135 states have (on average 1.474074074074074) internal successors, (199), 136 states have internal predecessors, (199), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-02-06 02:16:12,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2025-02-06 02:16:12,030 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:12,031 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:12,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:12,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:12,038 INFO L85 PathProgramCache]: Analyzing trace with hash -343718301, now seen corresponding path program 1 times [2025-02-06 02:16:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:12,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817391484] [2025-02-06 02:16:12,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:12,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-02-06 02:16:12,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-02-06 02:16:12,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:12,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2025-02-06 02:16:12,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:12,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817391484] [2025-02-06 02:16:12,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817391484] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:12,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764574561] [2025-02-06 02:16:12,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:12,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:12,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:16:12,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 02:16:12,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-02-06 02:16:12,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-02-06 02:16:12,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:12,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:12,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:16:12,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2025-02-06 02:16:12,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:16:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764574561] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:12,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:16:12,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581492710] [2025-02-06 02:16:12,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:12,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:16:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:12,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:16:12,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:16:12,767 INFO L87 Difference]: Start difference. First operand has 196 states, 135 states have (on average 1.474074074074074) internal successors, (199), 136 states have internal predecessors, (199), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2025-02-06 02:16:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:12,809 INFO L93 Difference]: Finished difference Result 385 states and 681 transitions. [2025-02-06 02:16:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:16:12,811 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) Word has length 374 [2025-02-06 02:16:12,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:12,820 INFO L225 Difference]: With dead ends: 385 [2025-02-06 02:16:12,821 INFO L226 Difference]: Without dead ends: 192 [2025-02-06 02:16:12,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:16:12,830 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:12,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:16:12,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-02-06 02:16:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2025-02-06 02:16:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 132 states have (on average 1.446969696969697) internal successors, (191), 132 states have internal predecessors, (191), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-02-06 02:16:12,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 307 transitions. [2025-02-06 02:16:12,896 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 307 transitions. Word has length 374 [2025-02-06 02:16:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:12,897 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 307 transitions. [2025-02-06 02:16:12,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2025-02-06 02:16:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 307 transitions. [2025-02-06 02:16:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2025-02-06 02:16:12,907 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:12,907 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:12,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 02:16:13,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:16:13,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:13,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:13,110 INFO L85 PathProgramCache]: Analyzing trace with hash 872277405, now seen corresponding path program 1 times [2025-02-06 02:16:13,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:13,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261524069] [2025-02-06 02:16:13,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:13,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 374 statements into 1 equivalence classes. [2025-02-06 02:16:13,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 374 of 374 statements. [2025-02-06 02:16:13,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:13,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:13,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:13,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261524069] [2025-02-06 02:16:13,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261524069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:13,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:13,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:13,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647222956] [2025-02-06 02:16:13,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:13,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:13,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:13,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:13,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:13,448 INFO L87 Difference]: Start difference. First operand 192 states and 307 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:13,570 INFO L93 Difference]: Finished difference Result 562 states and 899 transitions. [2025-02-06 02:16:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:13,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 374 [2025-02-06 02:16:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:13,578 INFO L225 Difference]: With dead ends: 562 [2025-02-06 02:16:13,579 INFO L226 Difference]: Without dead ends: 373 [2025-02-06 02:16:13,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:13,581 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 270 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:13,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 617 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:16:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-02-06 02:16:13,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 370. [2025-02-06 02:16:13,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 251 states have (on average 1.4143426294820718) internal successors, (355), 251 states have internal predecessors, (355), 116 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116) [2025-02-06 02:16:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 587 transitions. [2025-02-06 02:16:13,660 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 587 transitions. Word has length 374 [2025-02-06 02:16:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:13,661 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 587 transitions. [2025-02-06 02:16:13,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 587 transitions. [2025-02-06 02:16:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-02-06 02:16:13,667 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:13,667 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:13,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:16:13,668 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:13,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash -666585806, now seen corresponding path program 1 times [2025-02-06 02:16:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:13,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959724875] [2025-02-06 02:16:13,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:13,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:13,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-02-06 02:16:13,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-02-06 02:16:13,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:13,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959724875] [2025-02-06 02:16:14,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959724875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:14,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:14,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 02:16:14,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673651996] [2025-02-06 02:16:14,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:14,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:16:14,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:14,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:16:14,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:16:14,413 INFO L87 Difference]: Start difference. First operand 370 states and 587 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2025-02-06 02:16:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:15,173 INFO L93 Difference]: Finished difference Result 1179 states and 1847 transitions. [2025-02-06 02:16:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:16:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 375 [2025-02-06 02:16:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:15,181 INFO L225 Difference]: With dead ends: 1179 [2025-02-06 02:16:15,181 INFO L226 Difference]: Without dead ends: 812 [2025-02-06 02:16:15,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:16:15,184 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 617 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:15,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 1322 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 02:16:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2025-02-06 02:16:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 722. [2025-02-06 02:16:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 538 states have (on average 1.4349442379182156) internal successors, (772), 539 states have internal predecessors, (772), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 178 states have call predecessors, (179), 179 states have call successors, (179) [2025-02-06 02:16:15,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1130 transitions. [2025-02-06 02:16:15,260 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1130 transitions. Word has length 375 [2025-02-06 02:16:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:15,262 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1130 transitions. [2025-02-06 02:16:15,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2025-02-06 02:16:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1130 transitions. [2025-02-06 02:16:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-02-06 02:16:15,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:15,267 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:15,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:16:15,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:15,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash -832171581, now seen corresponding path program 1 times [2025-02-06 02:16:15,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:15,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2284510] [2025-02-06 02:16:15,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:15,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-02-06 02:16:15,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-02-06 02:16:15,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:15,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:15,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2284510] [2025-02-06 02:16:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2284510] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:15,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969243572] [2025-02-06 02:16:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:15,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:15,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:15,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:15,750 INFO L87 Difference]: Start difference. First operand 722 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:15,812 INFO L93 Difference]: Finished difference Result 1441 states and 2257 transitions. [2025-02-06 02:16:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:15,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2025-02-06 02:16:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:15,818 INFO L225 Difference]: With dead ends: 1441 [2025-02-06 02:16:15,819 INFO L226 Difference]: Without dead ends: 722 [2025-02-06 02:16:15,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:15,821 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:15,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 593 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:16:15,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2025-02-06 02:16:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2025-02-06 02:16:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 538 states have (on average 1.4275092936802973) internal successors, (768), 539 states have internal predecessors, (768), 179 states have call successors, (179), 4 states have call predecessors, (179), 4 states have return successors, (179), 178 states have call predecessors, (179), 179 states have call successors, (179) [2025-02-06 02:16:15,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1126 transitions. [2025-02-06 02:16:15,910 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1126 transitions. Word has length 375 [2025-02-06 02:16:15,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:15,910 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1126 transitions. [2025-02-06 02:16:15,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:15,911 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1126 transitions. [2025-02-06 02:16:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-02-06 02:16:15,918 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:15,918 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:15,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:16:15,919 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:15,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1754855164, now seen corresponding path program 1 times [2025-02-06 02:16:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868139022] [2025-02-06 02:16:15,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:15,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:15,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 375 statements into 1 equivalence classes. [2025-02-06 02:16:16,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 375 of 375 statements. [2025-02-06 02:16:16,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:16,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:16,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868139022] [2025-02-06 02:16:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868139022] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:16,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:16,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:16:16,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844319886] [2025-02-06 02:16:16,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:16,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:16:16,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:16,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:16:16,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:16,651 INFO L87 Difference]: Start difference. First operand 722 states and 1126 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:17,182 INFO L93 Difference]: Finished difference Result 1845 states and 2867 transitions. [2025-02-06 02:16:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:16:17,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2025-02-06 02:16:17,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:17,189 INFO L225 Difference]: With dead ends: 1845 [2025-02-06 02:16:17,189 INFO L226 Difference]: Without dead ends: 1126 [2025-02-06 02:16:17,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:16:17,192 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 201 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:17,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1005 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:16:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2025-02-06 02:16:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1098. [2025-02-06 02:16:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 855 states have (on average 1.4397660818713451) internal successors, (1231), 856 states have internal predecessors, (1231), 237 states have call successors, (237), 5 states have call predecessors, (237), 5 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) [2025-02-06 02:16:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1705 transitions. [2025-02-06 02:16:17,295 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1705 transitions. Word has length 375 [2025-02-06 02:16:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:17,296 INFO L471 AbstractCegarLoop]: Abstraction has 1098 states and 1705 transitions. [2025-02-06 02:16:17,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1705 transitions. [2025-02-06 02:16:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2025-02-06 02:16:17,301 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:17,302 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:17,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:16:17,305 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:17,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash 303504158, now seen corresponding path program 1 times [2025-02-06 02:16:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:17,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353051333] [2025-02-06 02:16:17,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:17,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:17,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 376 statements into 1 equivalence classes. [2025-02-06 02:16:17,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 376 of 376 statements. [2025-02-06 02:16:17,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:17,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:17,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353051333] [2025-02-06 02:16:17,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353051333] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:17,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:16:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19622536] [2025-02-06 02:16:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:17,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:16:17,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:17,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:16:17,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:16:17,721 INFO L87 Difference]: Start difference. First operand 1098 states and 1705 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:18,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:18,006 INFO L93 Difference]: Finished difference Result 2112 states and 3270 transitions. [2025-02-06 02:16:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:16:18,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 376 [2025-02-06 02:16:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:18,015 INFO L225 Difference]: With dead ends: 2112 [2025-02-06 02:16:18,015 INFO L226 Difference]: Without dead ends: 1118 [2025-02-06 02:16:18,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:18,019 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 258 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:18,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 866 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:16:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2025-02-06 02:16:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1092. [2025-02-06 02:16:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 849 states have (on average 1.4358068315665489) internal successors, (1219), 850 states have internal predecessors, (1219), 237 states have call successors, (237), 5 states have call predecessors, (237), 5 states have return successors, (237), 236 states have call predecessors, (237), 237 states have call successors, (237) [2025-02-06 02:16:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1693 transitions. [2025-02-06 02:16:18,094 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1693 transitions. Word has length 376 [2025-02-06 02:16:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:18,094 INFO L471 AbstractCegarLoop]: Abstraction has 1092 states and 1693 transitions. [2025-02-06 02:16:18,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1693 transitions. [2025-02-06 02:16:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-02-06 02:16:18,099 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:18,099 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:18,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 02:16:18,100 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:18,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1728891029, now seen corresponding path program 1 times [2025-02-06 02:16:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153344828] [2025-02-06 02:16:18,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:18,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-02-06 02:16:18,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-02-06 02:16:18,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:18,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:18,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153344828] [2025-02-06 02:16:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153344828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:18,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:18,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:16:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113578278] [2025-02-06 02:16:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:18,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:16:18,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:18,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:16:18,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:16:18,391 INFO L87 Difference]: Start difference. First operand 1092 states and 1693 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:18,751 INFO L93 Difference]: Finished difference Result 2738 states and 4237 transitions. [2025-02-06 02:16:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:16:18,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 377 [2025-02-06 02:16:18,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:18,761 INFO L225 Difference]: With dead ends: 2738 [2025-02-06 02:16:18,761 INFO L226 Difference]: Without dead ends: 1755 [2025-02-06 02:16:18,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:18,765 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 405 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:18,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 875 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:16:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2025-02-06 02:16:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1456. [2025-02-06 02:16:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1095 states have (on average 1.4164383561643836) internal successors, (1551), 1096 states have internal predecessors, (1551), 353 states have call successors, (353), 7 states have call predecessors, (353), 7 states have return successors, (353), 352 states have call predecessors, (353), 353 states have call successors, (353) [2025-02-06 02:16:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2257 transitions. [2025-02-06 02:16:18,881 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2257 transitions. Word has length 377 [2025-02-06 02:16:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:18,881 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2257 transitions. [2025-02-06 02:16:18,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2257 transitions. [2025-02-06 02:16:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2025-02-06 02:16:18,886 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:18,886 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:18,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 02:16:18,887 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1184052054, now seen corresponding path program 1 times [2025-02-06 02:16:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042387088] [2025-02-06 02:16:18,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:18,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-02-06 02:16:19,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-02-06 02:16:19,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:19,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 195 proven. 141 refuted. 0 times theorem prover too weak. 6276 trivial. 0 not checked. [2025-02-06 02:16:19,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042387088] [2025-02-06 02:16:19,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042387088] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:19,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494578612] [2025-02-06 02:16:19,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:19,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:19,808 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:16:19,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 02:16:19,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 377 statements into 1 equivalence classes. [2025-02-06 02:16:20,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 377 of 377 statements. [2025-02-06 02:16:20,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:20,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:20,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 02:16:20,036 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1630 proven. 174 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2025-02-06 02:16:21,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:21,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494578612] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:21,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:16:21,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 22] total 26 [2025-02-06 02:16:21,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674634351] [2025-02-06 02:16:21,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:21,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 02:16:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:21,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 02:16:21,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2025-02-06 02:16:21,624 INFO L87 Difference]: Start difference. First operand 1456 states and 2257 transitions. Second operand has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 24 states have internal predecessors, (189), 9 states have call successors, (116), 6 states have call predecessors, (116), 9 states have return successors, (116), 10 states have call predecessors, (116), 9 states have call successors, (116) [2025-02-06 02:16:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:27,236 INFO L93 Difference]: Finished difference Result 7753 states and 11511 transitions. [2025-02-06 02:16:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-02-06 02:16:27,237 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 24 states have internal predecessors, (189), 9 states have call successors, (116), 6 states have call predecessors, (116), 9 states have return successors, (116), 10 states have call predecessors, (116), 9 states have call successors, (116) Word has length 377 [2025-02-06 02:16:27,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:27,266 INFO L225 Difference]: With dead ends: 7753 [2025-02-06 02:16:27,266 INFO L226 Difference]: Without dead ends: 6406 [2025-02-06 02:16:27,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2451, Invalid=11591, Unknown=0, NotChecked=0, Total=14042 [2025-02-06 02:16:27,275 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 3488 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 1838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1838 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:27,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3355 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1838 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-06 02:16:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2025-02-06 02:16:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 3909. [2025-02-06 02:16:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3909 states, 3175 states have (on average 1.4154330708661418) internal successors, (4494), 3177 states have internal predecessors, (4494), 648 states have call successors, (648), 85 states have call predecessors, (648), 85 states have return successors, (648), 646 states have call predecessors, (648), 648 states have call successors, (648) [2025-02-06 02:16:27,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 5790 transitions. [2025-02-06 02:16:27,609 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 5790 transitions. Word has length 377 [2025-02-06 02:16:27,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:27,610 INFO L471 AbstractCegarLoop]: Abstraction has 3909 states and 5790 transitions. [2025-02-06 02:16:27,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.269230769230769) internal successors, (189), 24 states have internal predecessors, (189), 9 states have call successors, (116), 6 states have call predecessors, (116), 9 states have return successors, (116), 10 states have call predecessors, (116), 9 states have call successors, (116) [2025-02-06 02:16:27,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 5790 transitions. [2025-02-06 02:16:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-02-06 02:16:27,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:27,616 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:27,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 02:16:27,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:27,820 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:27,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:27,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1597641891, now seen corresponding path program 1 times [2025-02-06 02:16:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:27,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685345848] [2025-02-06 02:16:27,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:27,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:28,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:28,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:28,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:16:28,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716033837] [2025-02-06 02:16:28,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:28,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:28,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:28,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:16:28,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 02:16:28,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:28,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:28,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:28,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:28,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 02:16:28,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 1641 proven. 147 refuted. 0 times theorem prover too weak. 4824 trivial. 0 not checked. [2025-02-06 02:16:28,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:29,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685345848] [2025-02-06 02:16:29,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:16:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716033837] [2025-02-06 02:16:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716033837] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:29,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:16:29,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2025-02-06 02:16:29,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277875558] [2025-02-06 02:16:29,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:29,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 02:16:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:29,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 02:16:29,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:16:29,415 INFO L87 Difference]: Start difference. First operand 3909 states and 5790 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:30,259 INFO L93 Difference]: Finished difference Result 16069 states and 23901 transitions. [2025-02-06 02:16:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 02:16:30,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 379 [2025-02-06 02:16:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:30,302 INFO L225 Difference]: With dead ends: 16069 [2025-02-06 02:16:30,302 INFO L226 Difference]: Without dead ends: 12457 [2025-02-06 02:16:30,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2025-02-06 02:16:30,315 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 960 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:30,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1716 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 02:16:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2025-02-06 02:16:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 5833. [2025-02-06 02:16:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5833 states, 5035 states have (on average 1.44428997020854) internal successors, (7272), 5045 states have internal predecessors, (7272), 700 states have call successors, (700), 97 states have call predecessors, (700), 97 states have return successors, (700), 690 states have call predecessors, (700), 700 states have call successors, (700) [2025-02-06 02:16:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 8672 transitions. [2025-02-06 02:16:30,650 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 8672 transitions. Word has length 379 [2025-02-06 02:16:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:30,651 INFO L471 AbstractCegarLoop]: Abstraction has 5833 states and 8672 transitions. [2025-02-06 02:16:30,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 8672 transitions. [2025-02-06 02:16:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-02-06 02:16:30,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:30,656 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:30,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 02:16:30,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:30,861 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:30,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash -636027874, now seen corresponding path program 1 times [2025-02-06 02:16:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663801784] [2025-02-06 02:16:30,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:30,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:30,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:31,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:31,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:31,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 6 proven. 165 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2025-02-06 02:16:32,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663801784] [2025-02-06 02:16:32,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663801784] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:32,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448482874] [2025-02-06 02:16:32,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:32,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:32,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:32,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:16:32,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 02:16:32,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:32,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:32,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:32,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:32,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 02:16:32,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 501 proven. 165 refuted. 0 times theorem prover too weak. 5946 trivial. 0 not checked. [2025-02-06 02:16:33,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:34,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448482874] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:34,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 02:16:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2025-02-06 02:16:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60380105] [2025-02-06 02:16:34,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:34,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 02:16:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:34,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 02:16:34,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-02-06 02:16:34,337 INFO L87 Difference]: Start difference. First operand 5833 states and 8672 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2025-02-06 02:16:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:36,233 INFO L93 Difference]: Finished difference Result 11693 states and 17333 transitions. [2025-02-06 02:16:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 02:16:36,235 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 379 [2025-02-06 02:16:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:36,263 INFO L225 Difference]: With dead ends: 11693 [2025-02-06 02:16:36,263 INFO L226 Difference]: Without dead ends: 6553 [2025-02-06 02:16:36,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2025-02-06 02:16:36,273 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 329 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:36,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1616 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-06 02:16:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6553 states. [2025-02-06 02:16:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6553 to 5833. [2025-02-06 02:16:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5833 states, 5030 states have (on average 1.440755467196819) internal successors, (7247), 5040 states have internal predecessors, (7247), 700 states have call successors, (700), 102 states have call predecessors, (700), 102 states have return successors, (700), 690 states have call predecessors, (700), 700 states have call successors, (700) [2025-02-06 02:16:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 8647 transitions. [2025-02-06 02:16:36,540 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 8647 transitions. Word has length 379 [2025-02-06 02:16:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:36,541 INFO L471 AbstractCegarLoop]: Abstraction has 5833 states and 8647 transitions. [2025-02-06 02:16:36,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (116), 3 states have call predecessors, (116), 5 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2025-02-06 02:16:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 8647 transitions. [2025-02-06 02:16:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-02-06 02:16:36,544 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:36,545 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:36,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 02:16:36,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 02:16:36,762 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:36,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash 70849598, now seen corresponding path program 1 times [2025-02-06 02:16:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704675597] [2025-02-06 02:16:36,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:36,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:36,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:36,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:36,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2025-02-06 02:16:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704675597] [2025-02-06 02:16:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704675597] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:16:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346833963] [2025-02-06 02:16:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:39,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:16:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:39,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:16:39,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:16:39,732 INFO L87 Difference]: Start difference. First operand 5833 states and 8647 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:40,220 INFO L93 Difference]: Finished difference Result 14739 states and 21910 transitions. [2025-02-06 02:16:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:16:40,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 379 [2025-02-06 02:16:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:40,250 INFO L225 Difference]: With dead ends: 14739 [2025-02-06 02:16:40,250 INFO L226 Difference]: Without dead ends: 9627 [2025-02-06 02:16:40,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:40,261 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 255 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:40,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 791 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:16:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9627 states. [2025-02-06 02:16:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9627 to 7463. [2025-02-06 02:16:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7463 states, 6612 states have (on average 1.4621899576527526) internal successors, (9668), 6634 states have internal predecessors, (9668), 736 states have call successors, (736), 114 states have call predecessors, (736), 114 states have return successors, (736), 714 states have call predecessors, (736), 736 states have call successors, (736) [2025-02-06 02:16:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7463 states to 7463 states and 11140 transitions. [2025-02-06 02:16:40,581 INFO L78 Accepts]: Start accepts. Automaton has 7463 states and 11140 transitions. Word has length 379 [2025-02-06 02:16:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:40,583 INFO L471 AbstractCegarLoop]: Abstraction has 7463 states and 11140 transitions. [2025-02-06 02:16:40,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2025-02-06 02:16:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7463 states and 11140 transitions. [2025-02-06 02:16:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-02-06 02:16:40,586 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:40,586 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:16:40,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 02:16:40,586 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:40,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1173914883, now seen corresponding path program 1 times [2025-02-06 02:16:40,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:40,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857436031] [2025-02-06 02:16:40,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:40,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:40,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:40,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:40,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:40,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:16:40,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902183939] [2025-02-06 02:16:40,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:40,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:40,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:40,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:16:40,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 02:16:40,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:16:41,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:16:41,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:41,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:41,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 02:16:41,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4233 proven. 441 refuted. 0 times theorem prover too weak. 1938 trivial. 0 not checked. [2025-02-06 02:16:43,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:17:21,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:17:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857436031] [2025-02-06 02:17:21,252 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:17:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902183939] [2025-02-06 02:17:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902183939] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:17:21,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:17:21,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2025-02-06 02:17:21,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29104646] [2025-02-06 02:17:21,252 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:17:21,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 02:17:21,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:17:21,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 02:17:21,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=322, Unknown=8, NotChecked=0, Total=420 [2025-02-06 02:17:21,254 INFO L87 Difference]: Start difference. First operand 7463 states and 11140 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 14 states have internal predecessors, (113), 5 states have call successors, (58), 5 states have call predecessors, (58), 8 states have return successors, (58), 5 states have call predecessors, (58), 5 states have call successors, (58)